☣️ UN 3011 • CLASS 6
Mercury based pesticide, liquid, poisonous, flammable
Placard: Toxic. Training/quick-reference only — use current ERG + SOP/SOG for incident-specific actions.
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⚠️ This page is a quick-reference aid. For real incidents: stage upwind, isolate, deny entry, request Hazmat early, and consult the current ERG + SOP/SOG.
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Quick details
UN 3011
Class: 6
Placard type: Toxic
ERG: Guide 131 (check current ERG)
Isolation: ERG 131: isolate spill 25-50m all directions; for large spill consider initial evacuation 300m downwind; treat as toxic and flammable hazard
Chemical & Response Details
| Also known as | Mercury-containing pesticide liquidOrganomercury pesticide solutionMercurial pesticide formulationMercury fungicide liquid |
| Appearance | Liquid pesticide formulation containing mercury compounds, typically colorless to pale yellow. May have characteristic mercurial or solvent-like odor depending on formulation. |
| Flash Point | 23-61C (73-142F) typical range for flammable liquid pesticide formulations |
| Boiling Point | Varies by formulation, typically 100-200C (212-392F) depending on solvent system |
| Vapor Density | Greater than 1 (heavier than air) |
| Water Reactivity | No significant reaction with water, but mercury compounds may leach into aqueous environment |
| Extinguishing | Alcohol-resistant foam, CO2, dry chemical; water spray for cooling only |
| PPE | ⚠️ Level A or B required; full encapsulation recommended due to mercury toxicity; SCBA mandatory; butyl rubber or Viton gloves; prevent all skin contact |
| Isolation | ERG 131: isolate spill 25-50m all directions; for large spill consider initial evacuation 300m downwind; treat as toxic and flammable hazard |
Chemical details are general reference only. Always verify with current SDS, ERG, and SOP/SOG.
Common hazards (high level)
- TOXIC; may be fatal if inhaled, ingested or absorbed through skin.
- Inhalation or contact with some of these materials will irritate or burn skin and eyes.
- Methyl chloroacetate (UN2295) is an eye irritant/lachrymator (causes flow of tears).
- Fire will produce irritating, corrosive and/or toxic gases.
- Vapors may cause dizziness or asphyxiation, especially when in closed or confined areas.
- Runoff from fire control or dilution water may cause environmental contamination.
- HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
- Vapors may form explosive mixtures with air.
First actions (field-minded)
- CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
- Keep unauthorized personnel away.
- Stay upwind, uphill and/or upstream.
- Ventilate closed spaces before entering, but only if properly trained and equipped.
- Isolate spill or leak area for at least 50 meters (150 feet) in all directions.
- For highlighted materials: see Table 1 - Initial Isolation and Protective Action Distances.
- For non-highlighted materials: increase the immediate precautionary measure distance, in the downwind
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UN 3011 — Mercury based pesticide, liquid, poisono HAZMAT RADIO NOTE — UN 3011
Product: Mercury based pesticide, liquid, poisonous, flammable
Class 6 / Toxic / ERG 131
PPE: Level A or B required; full encapsulation recommended due to mercury toxicity; SCBA mandatory; butyl rubber or Viton gloves; prevent all skin contact
ISOLATION: ERG 131: isolate spill 25-50m all directions; for large spill consider initial evacuation 300m downwind; treat as toxic and flammable hazard
ACTION: Stage upwind · Isolate · Deny entry · Request HazmatRADIO
Use for: Quick radio or face-to-face size-up. Short, structured, field-ready.
=== IC HAZMAT BRIEFING ===
UN 3011 — Mercury based pesticide, liquid, poisonous, flammable
Class: 6 | Placard: Toxic | ERG Guide: 131
Appearance: Liquid pesticide formulation containing mercury compounds, typically colorless to pale yellow. May have characteristic mercurial or solvent-like odor depending on formulation.
Water Reactivity: No significant reaction with water, but mercury compounds may leach into aqueous environment
Extinguishing: Alcohol-resistant foam, CO2, dry chemical; water spray for cooling only
PPE: Level A or B required; full encapsulation recommended due to mercury toxicity; SCBA mandatory; butyl rubber or Viton gloves; prevent all skin contact
Isolation: ERG 131: isolate spill 25-50m all directions; for large spill consider initial evacuation 300m downwind; treat as toxic and flammable hazard
— Key Hazards —
• TOXIC; may be fatal if inhaled, ingested or absorbed through skin.
• Inhalation or contact with some of these materials will irritate or burn skin and eyes.
• Methyl chloroacetate (UN2295) is an eye irritant/lachrymator (causes flow of tears).
— First Actions —
• CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper
• Keep unauthorized personnel away.
• Stay upwind, uphill and/or upstream.
• Ventilate closed spaces before entering, but only if properly trained and equipped.
SOURCE: allfirefighter.com/hazmat/un/3011 | Always use current ERG + SOP/SOGIC BRIEFING
Use for: Incident command briefing, staging area whiteboard, or pre-entry team brief. Full chemical + response details.
UN3011 Mercury based pesticide, liquid, poisonous, flammable Cls6 ERG131 | allfirefighter.com/hazmat/un/3011SMS / 160 CHAR
Use for: Quick text to command or incoming units. Fits in a single SMS. Includes link to full page.
⚠️ Quick-reference only. Always use current ERG + SOP/SOG for incident-specific actions. Page: https://allfirefighter.com/hazmat/un/3011
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FAQ
TOXIC; may be fatal if inhaled, ingested or absorbed through skin. Inhalation or contact with some of these materials will irritate or burn skin and eyes. Methyl chloroacetate (UN2295) is an eye irritant/lachrymator (causes flow of tears). Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or asphyxiation, especially when in closed or confined areas. Runoff from fire control or dilution water may cause environmental contamination. HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air.
CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper Keep unauthorized personnel away. Stay upwind, uphill and/or upstream.
Level A or B required; full encapsulation recommended due to mercury toxicity; SCBA mandatory; butyl rubber or Viton gloves; prevent all skin contact
No. This is a training/quick-reference aid only. Always consult the current ERG Guide 131 and your department SOP/SOG for incident-specific protective actions.
Sources (high level): DOT/PHMSA marking & class concepts + ERG usage principles. This page does not reproduce ERG guide text—always consult the current ERG for incident-specific protective actions.